How is "takeoff distance" defined in aviation?

"Takeoff distance" is defined as the distance required for an aircraft to become airborne. This includes the entire process from the moment the aircraft begins its takeoff roll until it reaches a point where it can safely leave the ground and climb into the air. This definition captures not only the distance the aircraft travels while it is still on the runway but also considers factors like acceleration, engine performance, and aircraft weight.

This measure is crucial for pilots and flight planners as it directly informs decisions regarding runway length and aircraft operating limits. By understanding takeoff distance, pilots can ensure that they have adequate runway to achieve the necessary speed for liftoff, taking into account various conditions like altitude, temperature, and weight, which can all influence performance during takeoff.